3. ASN.1 BIT STRING value literal can be an ASCII string quoted or not quoted of any size.
Double quote (") is reserved as the string quotation.
(\") can be used to include (") inside the string.
For example, (Hello), ("Hello World!") and ("I heard \"Help!\"")
are all valid BIT STRING values.

4. ASN.1 BIT STRING value literal can also be a HEX string of any size.
To use a HEX string as BIT STRING value, the field entry must prefix
with "FORMAT:HEX," modifier.
For example, (FORMAT:HEX,BITSTRING:41424344) is a valid BIT STRING field entry
that represents (ABCD) in ASCII format.

5. ASN.1 BIT STRING value is stored with DER encoding as the value itself
with an extra leading byte of 0x00.
For example, "ABCD" is stored in DER format as 0x0041424344.

6. You can use the "asn1parse -dump" command option
to dump the BIT STRING value in HEX format.

Here are examples of using BIT STRING with the OpenSSL "asn1parse" command: